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1.
Cover band in Adelaide, South Australia
Casual Six rocked the footy club last night!!
by No 1 Fan September 01, 2008
 
2.
to endulge in enjoying 6 cold beers, be it in an hour, or over the night, the first six beers are designated the casual six because that is the base for a night of drinking, or just to enjoy an edge.
Brett: Are you drinking your face out?

Steve: Well quim, I drank a casual six after class, if you want to count I am a six pack ahead of you.
by thorn in my side March 03, 2008